<html>

<head>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
  <title>小黑记事本</title>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
  <meta name="robots" content="noindex, nofollow" />
  <meta name="googlebot" content="noindex, nofollow" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <link rel="stylesheet" type="text/css" href="./css/index.css" />
</head>

<body>
  <!-- 主体区域 -->
  <section id="todoapp">
    <!-- 输入框 -->
    <header class="header">
      <h1>小黑记事本</h1>
      <input v-model="inputValue" @keyup.enter="add" autofocus="autofocus" autocomplete="off" placeholder="请输入任务"
        class="new-todo" />
        
    </header>
    <!-- 列表区域 -->
    <section class="main">
      <ul class="todo-list">
        <li class="todo" v-for="(item,index) in list">
          <div class="view">
            <span class="index">{{index+1}}</span>
            <label for="">{{item}}</label> 
            <button class="destroy" @click="remove(index)"></button>
          </div>

        </li>
      </ul>
      
    </section>
    <!-- 统计和清空 -->
    <footer class="footer" >
      <span class="todo-count" v-if="list.length!=0">
        <strong>{{list.length}}</strong> items left
      </span>
      <button class="clear-completed" @click="clear" v-show="list.length!=0">
        Clear
      </button>
    </footer>
  </section>
  <!-- 底部 -->
  <footer class="info">
    <p>
      <a href="http://www.itheima.com/"><img src="./img/black.png" alt="" /></a>
    </p>
  </footer>
  <!-- 开发环境版本，包含了有帮助的命令行警告 -->
  <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
  <script>
    var todoapp=new Vue({
      el:'#todoapp',
      data:{
        list:['吃饭饭','睡觉觉','喝牛奶'],
        inputValue:'好好学习'
      },
      methods:{
        add:function(){
          this.list.push(this.inputValue);
        },
        remove:function(index){
          console.log('删除');
          console.log(index);
          this.list.splice(index,1);
        },
        clear:function(){
          this.list=[];//清除所有数据就是列表置空
        }
      },
    })
  </script>
</body>

</html>